A new inexpensive powerful magnetic sensor

 A team of Brown University physicists has developed a new type of compact, ultra-sensitive magnetometer. The new device could be useful in a variety of applications involving weak magnetic fields, the researchers say. “Nearly everything around us generates a magnetic field — from our electronic devices to our beating hearts — and we can use Read more about A new inexpensive powerful magnetic sensor[…]

New photoacoustic technique detects gases at parts-per-quadrillion level

A team of researchers has found a way to detect trace gases down to concentrations at the parts-per-quadrillion level using a new variation on the photoacoustic effect, a technique that measures the sound generated when light interacts with molecules. “In many ways, the photoacoustic effect is already the most practical method available for detecting pollutants Read more about New photoacoustic technique detects gases at parts-per-quadrillion level[…]

Researchers develop new lens for terahertz radiation

Brown University engineers have devised a way to focus terahertz radiation using an array of stacked metal plates, which may prove useful for terahertz imaging or in next-generation data networks. Terahertz radiation is a relatively unexplored slice of the electromagnetic spectrum, but it holds the promise of countless new imaging applications as well as wireless Read more about Researchers develop new lens for terahertz radiation[…]